Subungual hematoma
Subungual hematoma is a collection of blood (hematoma) underneath a toenail or fingernail. It can be extremely painful for an injury of its size, although otherwise it is not a serious medical condition. Subungual hematoma can resolve on their own, without treatment. If they are acutely painful, they may be drained.

Diagnosis and Treatment
Observation is enough in most cases. If there is severe pain, a hole may be made to drain the blood. A nail with a hematoma is highly vulnerable to fungal infection.

  • Subungual hematoma of a toe
References Subungual Hematoma - Case reports 38111403 
The authors present the case of a 64-year-old male who presented to the emergency department due to foot trauma. He sustained a large subungual hematoma, which was drained. Following the procedure, the patient achieved complete resolution of his pain.